feat: re-enable legacy client IDs #1561

Job	Run time
Generate SDKs	2m 13s
Run OIDC conformity tests	10m 34s
Run HSM tests	8m 58s
Run end-to-end tests (memory)	6m 31s
Run end-to-end tests (memory, --jwt)	7m 10s
Run tests and lints	18m 53s
Run end-to-end tests (postgres)	6m 39s
Run end-to-end tests (postgres, --jwt)	7m 14s
Run end-to-end tests (mysql)	7m 28s
Run end-to-end tests (mysql, --jwt)	7m 8s
Run end-to-end tests (cockroach)	7m 14s
Run end-to-end tests (cockroach, --jwt)	7m 58s
Build CLI docs	2m 5s
Generate changelog	0s
Generate release	0s
Render version schema	0s
Draft newsletter	0s
Release SDKs	0s
Send newsletter	0s
Pending approval Slack notification	0s
	1h 40m 5s

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